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Balanced and Unbalanced Forces

Balanced and Unbalanced Forces

Assessment

Presentation

Science

8th Grade

Hard

Created by

James Gonzalez

FREE Resource

16 Slides • 20 Questions

1

Balanced and Unbalanced Forces

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12

Multiple Choice

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Are the forces acting on the rope balanced or unbalanced?

1

Balanced

2

Unbalanced

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Multiple Choice

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Are the forces acting on the rope balanced or unbalanced?

1
Balanced
2
Unbalanced

14

Multiple Select

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Select 2 answers:

  1. 1. Is this Balanced or Unbalanced?

  2. 2. What is the Direction of the Force?

1

Balanced

2

Unbalanced

3

No motion

4

Moves to the left

5

Moves to the right

15

Multiple Choice

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  1. What is the Net Force?

1

400 N

2

0N

3

200 N

4

800 N

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Multiple Select

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Select 2 answers:

  1. 1. Is this Balanced or Unbalanced?

  2. 2. What is the Direction of the Force?

1

Balanced

2

Unbalanced

3

No motion

4

Moves Left

5

Moves Right

17

Multiple Choice

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  1. What is the Net Force?

1

500 N

2

0N

3

750 N

4

250 N

5

1250 N

18

Multiple Select

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Select 2 answers:

  1. 1. Is this Balanced or Unbalanced?

  2. 2. What is the Direction of the Force?

1

Balanced

2

Unbalanced

3

No motion

4

Moves left

5

Moves right

19

Multiple Choice

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  1. What is the Net Force?

1

500 N

2

0 N

3

300 N

4

800 N

5

200 N

20

Multiple Select

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Select 2 answers:

  1. 1. Is this Balanced or Unbalanced?

  2. 2. What is the Direction of the Force?

1

Balanced

2

Unbalanced

3

No Motion

4

Moves Left

5

Moves Right

21

Multiple Choice

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  1. What is the Net Force?

1

500 N

2

1000 N

3

0 N

4

5 N

5

50 N

22

Multiple Choice

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  1. Is this Balanced or Unbalanced?

1
Unbalanced
2
Balanced

23

Multiple Choice

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  1. What is the Net Force and direction of motion?

1

500 N left

2

500 N right

3

1500 N left

4

1000 N right

5

1000 N left

24

Multiple Choice

A dog sitting on the table.

1

Balanced

2

Unbalanced

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Multiple Choice

A kid accelerating down the hill.

1

Balanced

2

Unbalanced

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Newton's Laws of Motion

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The first law of motion is Inertia.
Inertia means that something in motion will stay in motion unless an unbalanced force affects it. Example: the soccer ball would keep going but the soccer goal stops it.

Inertia also means the same for an object at rest. An object at rest will stay at rest unless acted on by an unbalanced force.
Example: Your chromebook is resting on your desk. It will stay that way forever until you pick it up.

Newton's 1st Law of Motion

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Newton's 2nd law of motion is about unbalanced forces causing motion. Basically the more massive an object the more force must be applied to move the object with the same acceleration as a less massive object. Example: The car requires much more force than the lawn mover to move them both at 1 m/s.


If there is an unbalanced force that means there is acceleration. Vice versa, if acceleration is present, there is an unbalanced force involved.

Newton's 2nd Law of Motion

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The triangle, similar the distance, time, and speed triangle, tells you how to solve for Force, Mass, or Acceleration. Mass x Acceleration = Force. So as mass increases, the Force must also increase by the same proportions to keep it the same acceleration. This works the other way as well. If acceleration increases, force must also increase.

Newton's 2nd Law of Motion
Cont.

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​The 3rd law is for every action there is an equal an opposite reaction. This means for every force applied, there is a force applied in the opposite direction. Some examples include. Throwing a ball at the ground and it bouncing back up to you.
Another example is gravity pulling you to the center of the Earth, but the ground pushing back up on you so you do not fall through the ground.

Newton's 3rd Law of Motion

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Multiple Choice

Complete the equation

_____= Mass x Acceleration

1

Distance

2

Force

3

Inertia

4

Speed

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Multiple Choice

Force = Mass x Acceleration

1

Newton's 1st Law

2

Newton's 2nd Law

3

Newton's 3rd Law

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Multiple Choice

For every action there is an equal and opposite reaction

1

Newton's 1st law

2

Newton's 2nd Law

3

Newton's 3rd Law

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Multiple Choice

This word means that objects continue their current movement
and describes Newton's 1st Law

1

Force

2

Inertia

3

Balanced Forces

4

Unbalanced Forces

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Multiple Choice

An object in motion will stay in motion unless acted upon by an unbalanced force. An object in rest stays in rest unless acted upon by an unbalanced force.

1

Newton's 1st Law

2

Newton's 2nd Law

3

Newton's 3rd Law

36

Multiple Choice

What type of forces are present when an object accelerates?

1

Balanced Force

2

Unbalanced Force

Balanced and Unbalanced Forces

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